Stop beads in suspended ceilings



Aug. 13, 1957 H. w. HOLLISTER STOP BEADS 1N SUSPENDED CEILINGS FiledFeb. 17, 1955 jufl 5.

, INVENTOR. M14/942V M HOL/.f 75@ rates 2,8Z,359 Patented lling., 13,1957 STDP BEADS IN SUSPENDED CEILINGS Hairy W. HoilistenNew lork,fN. Y.Application `l`elnruar 17, 1955, Serial No. 488,967

3 Claims. (Cl. 72,-118) This invention relates to astop bead forplaster.

It is an object of the presentinvention to provide a stop beadforforming a connection between plaster and acoustic blocks used `inceilings.

It is anotherobjectof the inyention to provide a stop bead for plasteradapted `to provide a horizontally extending corner formation along adrop, acoustic ceiling.

Itis another object ofthe invention to provide a horizontal stop beadfor plaster work which can be readily assembled into the ceilingstructure and which is adapted to be attached and secured,` in a latwisemanner to the underfaceof rock lath as by the mere application of theextension of a wire through the bead and through the rock lath andsecuring the ends thereof by a twisting operation;

It is still another objectof the invention to provide a stop bead whichcanbe so assembled and used in a ceiling structure as to provideretaining means for glass walls extending to the ceilingfrorn a dwarfpartition.

It is a still further object of the invention to providea stopbead foruse ingplaster ceiling structures for making a connection betweenvertically extending plaster and acoustic blocks having a metal pan andwhich are secured by suspension from special clips in the ceilingstructure and wherein the stop bead` has a shelf portion on which oneend of the acoustic metal pan canbe rested for support.

Other objects of the invention areto provide a stop bead forplasterceiling structures which is of simple construction, inexpensive tomanufacture, easily embodied in the ceiling structure, simplifies theoperation of adding the plaster to the ceiling, provides support for theplaster and a trimmed horizontal edge, of pleasing appearance, compact,light in weight, durable, efficient and efiective in operation.

For other objects and for a better understanding of the invention,reference may be had to the following detailed description taken inconnection with the accompanying drawing, in which:

Figure l is a vertical sectional view of a drop ceiling structureembodying the stop bead of the present invention;

Fig. 2 is a fragmentary sectional view of a ceiling structure showingthe stop bead used in making a connection between horizontally extendingplaster and acoustic block;

Fig. 3 is a fragmentary sectional view of a drop ceiling structureincluding a special form of stop bead adapted for supporting an acousticblock having a metal housing;

Fig. 4 is a fragmentary perspective View of a stop bead used in theceiling structures shown in Figs. l and 2;

Fig. 5 is a fragmentary perspective view of a stop bead used in theceiling structure shown in Fig. 3 in connection with acoustic blockshaving a metal housing or pan.

Referring now particularly to Fig. l, represents a normal ceilingstructure to which `a drop ceiling structure indicated generally at 11is attached and suspended therefrom to provide a concealment for pipesand ducts and at the same time.` providing an acoustic ceiling. This iselected inthe modernization of old buildings where airy conditioning andvarious piping has to be concealed and wherein an acoustic structure canbe provided.

In effecting this arrangement or construction, the drop ceilingstructure issuspended` from the original ceiling and in order that itdoes not interfere with a window 12, the drop ceiling` structure isspaced from the window as shown, andthe vertical Wall of the dropceiling structure facing the window is plasteredas indicated at 13.Heretofore, this has been diliicult with current ceiling structureassemblies because ofthe need for perfecting the horizontally extendingedge ofthe drop ceiling structure that makes union with acoustic block14.

The drop ceiling structure 11 is connected to the ceiling 1lithrough-embedded toggle members 15 to which drop members ltiare attachedor secured by means of fastening bolts 17'. To the lower ends of thesedrop members 16 there are connected'` channel carriers 13 by boltfasteners 19. Beneath the-carriers 18 and secured thereto aretransversely extending rails 2l that are fastened to the carriers byU-shaped attaching clips 22.

Rock laths 23E are suspended from the transverse chan- Anel membersZliby special clips 24 longitudinally spaced across the channel members`2li and having horizontal projections or fingers 2.5 for receiving andsupporting the edges of the rockt lath.

The rock lath may have holes 26 through which a wire 27can be`extendedforsecuring to the underface of the rock lath a horizontallyextendingtstop bead 28; The wire 2Tis twisted as indicated" at 27 "totightly secure the bead 28 to the rock lath.

An acoustic block29`=isfsecured` tothe underface of the rocklath by glueadhesivein the conventional manner.

The stop bead 28 has a horizontal portion 3i) that fits flush againstthe rocklath undersurface, a drop portion 31 and a pla'sterretainingportion extending laterally from the lowerend ofthe drop-portion 31, asindicated atr32, and a turned up lip 38A to form a corner 39 runningalong the lower edge of-thewdroptceiling structure 11. A metal` lath ormesh Lttl'iis `extendedralong the front `of the structure and plasterlSFiSaIiiXed thereto in the usual manner andworked into the plasterportion 37 ofthe bead 2S,

as shown in Fig; 1,*wherebyito forma smooth and quickly made cornerformation. By the use of this bead, there is no need to perform withskill a rounded corner of the plaster, and plasterers with fless `skillcan quickly finish olf the horizontal edge of the drop ceilingstructure.

Another use for the horizontal bead 28 is shown at the right side ofFig. 1 where two beads 28 are arranged and secured to the rock lath inan opposing manner and spaced from each other so that an upwardlyextending glass plate 41 can be disposed therebetween and retainedsupported in the ceiling structure and will thereby provide aninexpensive support for the upper edge of the glass plate built into theceiling structure. These beads 21 would be secured to the rock lath 23by wires 27 with ends twisted as indicated at 27. The glass plate 41 canserve as the upper part of a partition, while the lower part of thepartition supports the lower edge of the glass plate 41 and provides adwarf partition 42 that rests on the oor 43. These stop beads thus notonly serve as a device for finishing off the horizontal edge of aceiling structure, but also when placing the ceiling structure in anopposing manner provides a simple means for supporting the upper edge ofa glass partition plate.

The wires 27 not only extend through holes 26 in the rock lath but alsoextend through corner holes 44 in the stop bead 28. The holes 44 extendthrough the union of the top portion 30 and the Vertical drop portion 31of the stop bead 28.

In Fig. 2, there is shown a still further use of the stop bead and adifferent drop ceiling structure wherein the plaster portion of thestructure runs horizontally from the acoustic block and union is made bymeans of a stop bead 28 between the plaster and the acoustic block. Ahorizontal plaster formation is connected and extended from the acousticblock by running the plaster from plaster supporting portion 37 of thebead 28 and as indicated at and supported from a horizontally extendingmesh 46.

In Fig. 3, there is shown a still further form of the invention whereinthe ceiling structure is made to support acoustic block assemblies whichhave a metal pan on the underside thereof and which is perforated. Thisacoustic block or assembly is indicated generally at 47 and isperforated as indicated at 48. The sides of the metal pan extendupwardly above acoustic material 49 within the pan and as indicated at50 and 51. The rock lath for this drop ceiling structure does not need arock lath for the securement of the acoustic block to thesuperstructure. At the end of the drop structure shown in Fig. 3, aspecial stop bead 52 is used. This stop bead is shown in Fig. 5, and hasa short horizontal top portion 53 and a relatively high verticallyextending portion 54, a plaster receiving portion 55 with an upturnedcorner lip 56 providing a corner 57 and a horizontal portion 58 servingas a shelf on which one edge of the metal acoustic pan assembly isrested, as shown in Fig. 3. The stop bead 52 is secured by a wire 60that is twisted at its ends as shown at 60' and to a carrier 61.

A plaster vertical wall 62 is secured to a mesh 63 and is held in andshaped at its lower end by the portion 55 of the bead 52 and the turnedup lip 56.

On the carrier 61 is secured a fastening clip 64 that serves to connecttransverse clip runners or rails 65 to which extensions 50 and 51 ofadjacent acoustic assemblies 47 are retained.

It will thus be seen that with'this drop ceiling structure the rock lathof the other structures are dispensed with.

It should now be apparent that there has been provided a drop ceilingstructure wherein the lower horizontal edge of the structure can beeasily and quickly formed without need to shape the plaster along theedge of the structure. It should be further apparent that the stop beadcan be formed to not only provide an abutment for an acoustic block edgebut also by the provision of a shelt` portion serve as a support for anacoustic metal pan assembly. It will be seen that these beads can'beeasily and readily formed and that when used in the ceiling structureprovide a simple means for finishing oli the edge of the structure andalso it will be seen, as shown in Fig. 1, the same can serve to supportthe upper edge of a glass partition wall part.

While various changes may be made in the detail construction,`it shallbe understood that such changes shall be within the spirit and scope ofthe present invention as defined by the appended claims.

What is claimed is:

1. In a drop ceiling structure, frame members depending from theceiling, a horizontal plaster stop bead and means for securing said stopbead to the under sides of the frame members, said plaster stop beadhaving a horizontal attaching portion litted ush against the under sidesof the frame members, a drop vertical portion secured along one side ofthe horizontal attaching portion and running continuously therewith, ahorizontal portion extending laterally from the lower end of the dropvertical said stop bead having a shelf portion extending inwardly fromthe drop vertical portionv and serving to further support the acousticmembers.

3. In a drop ceiling structure as dened in claim 1, and other stop beadsof the same shape arranged in opposing relationship to each other, meansfor securing said other stop beads to the frame members with the turnedup lip portions spaced from one another to provide a recess in theceiling structure through which a glass wall partition plate may beextended to be held against lateral displacement with respect theretoand to make the connection of the partition with the ceiling wallstructure.

References Cited in the tile of this patent UNITED STATES PATENTS1,708,688 Baum Apr. 9, 1929 1,728,461 Wolcott Sept. 17, 1929 2,160,794Price May 30, 1939 2,659,807 Wakefield Nov. 17, 1953

